U.S. patent application number 15/745123 was filed with the patent office on 2018-07-26 for corneal preservation and rehydration device.
This patent application is currently assigned to SHENZHEN AINEAR CORNEA ENGINEERING CO., LTD.. The applicant listed for this patent is SHENZHEN AINEAR CORNEA ENGINEERING CO., LTD.. Invention is credited to Yongmei YU, Jinnan ZHANG.
Application Number | 20180206482 15/745123 |
Document ID | / |
Family ID | 57942420 |
Filed Date | 2018-07-26 |
United States Patent
Application |
20180206482 |
Kind Code |
A1 |
ZHANG; Jinnan ; et
al. |
July 26, 2018 |
CORNEAL PRESERVATION AND REHYDRATION DEVICE
Abstract
A corneal preservation and rehydration device includes a box
body and a box lid (1), wherein the box body and the box lid are
detachably connected. A corneal bracket (2) is provided in the box
body for holding a cornea, wherein a surface of the corneal bracket
for placing a cornea is a convex spherical surface (21), and a
blocking portion (22) is arranged at the surrounding of the convex
spherical surface (21) for preventing a cornea from dropping
out.
Inventors: |
ZHANG; Jinnan; (Shenzhen,
CN) ; YU; Yongmei; (Shenzhen, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SHENZHEN AINEAR CORNEA ENGINEERING CO., LTD. |
Longgang Dist., Shenzhen |
|
CN |
|
|
Assignee: |
SHENZHEN AINEAR CORNEA ENGINEERING
CO., LTD.
Longgang Dist., Shenzhen
CN
|
Family ID: |
57942420 |
Appl. No.: |
15/745123 |
Filed: |
July 29, 2016 |
PCT Filed: |
July 29, 2016 |
PCT NO: |
PCT/CN2016/092432 |
371 Date: |
January 15, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A01N 1/0273 20130101;
A01N 1/0263 20130101; A61F 2/0095 20130101 |
International
Class: |
A01N 1/02 20060101
A01N001/02 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 31, 2015 |
CN |
201510466857.7 |
Jul 31, 2015 |
CN |
201520572717.3 |
Claims
1. A corneal preservation and rehydration device, comprising a box
body and a box lid, wherein the box body and the box lid are
detachably connected, and a corneal bracket is provided in the box
body for holding a cornea, wherein a surface of the corneal bracket
for placing a cornea is a convex spherical surface, and a blocking
portion is provided at the surrounding of the convex spherical
surface for preventing a cornea from dropping out.
2. The corneal preservation and rehydration device according to
claim 1, wherein the box body comprises a box trunk and a box
bottom which is located under the bottom part of the box trunk; the
corneal bracket is located above the box bottom; a receiving cavity
is provided between the box bottom and the corneal bracket; the box
lid is configured to cover the box body; a cornea-holding space is
provided between the corneal bracket and the box lid; and, the
receiving cavity and the cornea-holding space communicate.
3. The corneal preservation and rehydration device according to
claim 2, wherein a limiting structure is provided in the receiving
cavity for fixing desiccant; and, the box trunk and the box bottom
are detachably connected.
4. The corneal preservation and rehydration device according to
claim 3, wherein the box bottom comprises a base and a tubular
protrusion which is arranged on the upper surface of the base; a
cavity surrounded by the tubular protrusion is the receiving
cavity; and the external wall of the tubular protrusion is provided
with an external thread, matching with an internal thread which is
provided in the internal wall of the bottom part of the box
trunk.
5. The corneal preservation and rehydration device according to
claim 1, wherein the blocking portion comprises a plurality of
protruded poles arranged along the circumference of the convex
spherical surface, there is a gap between each adjacent two of the
plurality of protruded poles, and the width of the gap is 1-3
mm.
6. The corneal preservation and rehydration device according to
claim 1, wherein the distance between the highest point of the
blocking portion and the lower surface of the box lid is less than
0.2 mm.
7. The corneal preservation and rehydration device according to
claim 1, wherein the upper end surface of the box body is higher
than the highest point of the blocking portion, and the top
external wall of the box lid is recessed in a direction approaching
the blocking portion.
8. The corneal preservation and rehydration device according to
claim 2, wherein the corneal bracket comprises a supporting plate
and a boss arranged on the supporting plate, the boss protrudes in
a direction approaching the box lid, the upper surface of the boss
is the convex spherical surface for placing a cornea, the edge of
the supporting plate is connected to the internal wall of the box
trunk, and the supporting plate is provided with through holes
penetrating the supporting plate.
9. The corneal preservation and rehydration device according to
claim 8, wherein the supporting plate is a conical plate, and the
through holes are uniformly arranged on the conical plate.
10. The corneal preservation and rehydration device according to
claim 1, wherein the box body has a side wall of two layers, and
there is a gap between the two layers, with a stiffening rib
provided therein.
11. The corneal preservation and rehydration device according to
claim 4, wherein the external wall of the top part of the box trunk
is provided with an external thread, matching with an internal
thread which is provided in the side internal wall of the box lid;
a first sealing ring is arranged on a connecting position of the
box trunk and the box lid; and a second sealing ring is arranged on
a connecting position of the box trunk and the box bottom.
12. The corneal preservation and rehydration device according to
claim 1, wherein the curvature of the convex spherical surface is
similar to the curvature of a cornea.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This is a national phase entry under 35 USC 371 of
International Patent Application No. PCT/CN2016/092432 filed on
Jul. 29, 2016, which application claims priority to Chinese Patent
Application No. 201510466857.7 filed with the Chinese Patent Office
on Jul. 31, 2015, titled "Corneal Preservation and Rehydration
Device", and Chinese Utility Model Application No. 201520572717.3
filed with the Chinese Patent Office on Jul. 31, 2015, titled
"Cornea Holding Device", the disclosures of which are incorporated
herein by reference in their entireties.
TECHNICAL FIELD
[0002] The present disclosure relates to the technical field of
corneal preservation, and in particular to a corneal preservation
and rehydration device.
BACKGROUND
[0003] A cornea is one layer of a transparent film in the front
part of an eye. When a cornea is damaged or has a lesion, a corneal
transplantation surgery is in need for therapy. And a cornea used
in the corneal transplantation surgery may be an artificial
bio-cornea or a cornea donated from a human body.
[0004] The artificial bio-cornea or the cornea donated from a human
body needs to be packaged, stored and transported prior to the
transplantation surgery to avoid the cornea being contaminated or
degenerating during its storage and transportation. During a
procedure of corneal preservation, a cornea usually needs to be
preserved or needs to be dried and preserved. A dried and preserved
cornea, before use, needs to be placed in water for
rehydration.
[0005] A packaging box in the prior art is a penicillin bottle or a
common box body structure, and a cornea is placed directly in a box
body for storage. In this way, the cornea is easy to slide off,
overturn, get folds or deformation, or even be damaged during
movement and transportation prior to clinical use, because the
cornea is not positioned effectively in the packaging box. In a
packaging box with desiccant to store, movement and sliding off of
a cornea will cause the cornea to contact with the desiccant, and
thus the cornea will be contaminated. Such that, it is not easy to
maintain an original shape of a cornea, and it easily results in a
change in obverse and reverse of an artificial bio-cornea, thus the
clinical use will be affected. Furthermore, before the
transplantation surgery is performed, a cornea usually needs to be
rehydrated. A clinician needs to remove the cornea into another
container to perform a rehydration procedure in the prior art, this
undoubtedly increases the risk of contaminating and damaging the
cornea.
SUMMARY
[0006] An embodiment of the present disclosure provides a corneal
preservation and rehydration device, comprising a box body and a
box lid, wherein the box body and the box lid are detachably
connected. A corneal bracket is provided in the box body for
holding a cornea, wherein a surface of the corneal bracket for
placing a cornea is a convex spherical surface, and a blocking
portion is provided at the surrounding of the convex spherical
surface for preventing a cornea from dropping out.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] To describe the technical solutions in the embodiments of
the present disclosure or in the prior art more clearly, the
accompanying drawings to be used for describing the embodiments or
the prior art will be introduced briefly. Obviously, the
accompanying drawings to be described below are merely some of the
embodiments of the present disclosure. And those skilled in the art
can obtain other drawings according to these drawings without any
creative effort.
[0008] FIG. 1 is an assembly view of a corneal preservation and
rehydration device according to an embodiment of the present
disclosure;
[0009] FIG. 2 is a cross-sectional view of a box bottom of a
corneal preservation and rehydration device according to an
embodiment of the present disclosure;
[0010] FIG. 3 is a perspective view of a box bottom of a corneal
preservation and rehydration device according to an embodiment of
the present disclosure;
[0011] FIG. 4 is a perspective view of a box trunk of a corneal
preservation and rehydration device according to an embodiment of
the present disclosure;
[0012] FIG. 5 is a cross-sectional view of a box lid of a corneal
preservation and rehydration device according to an embodiment of
the present disclosure;
[0013] FIG. 6 is a perspective view of a box lid of the corneal
preservation and rehydration device according to an embodiment of
the present disclosure;
[0014] FIG. 7 is a cross-sectional view of a box trunk of a corneal
preservation and rehydration device according to an embodiment of
the present disclosure;
[0015] FIG. 8 is a perspective view of a corneal preservation and
rehydration device according to an embodiment of the present
disclosure.
DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present
disclosure will be clearly and completely described below with
reference to the accompanying drawings in the embodiments of the
present disclosure. Apparently, the embodiments described herein
are merely a part but not all of the embodiments of the present
disclosure. All other embodiments obtained by those skilled in the
art based on the embodiments of the present disclosure without any
creative effort shall fall within the protection scope of the
present disclosure.
[0017] In the description of the present disclosure, it shall be
understood that the orientation or position relation indicated by
terms "center", "upper", "lower", "front", "back", "left", "right",
"vertical", "horizontal", "top", "bottom", "internal", "external"
or the like is an direction or position relation shown based on the
accompanying drawings merely for describing the present disclosure
and simplifying the description, rather than indicating or implying
that the indicated devices or components must have a particular
orientation, or shall be constructed and operated in a particular
orientation. Therefore the terms should not be interpreted as
limitations to the present disclosure. Unless otherwise stated, in
the description of the present disclosure, "a plurality of" means
two or more.
[0018] An embodiment of the present disclosure provides a corneal
preservation and rehydration device capable of effectively
positioning, fixing and preserving a cornea and maintaining an
original shape of the cornea so as to prevent the cornea from being
deformed during movement and transportation.
[0019] Referring to FIG. 1, FIG. 1 shows a specific embodiment of a
corneal preservation and rehydration device of the embodiments of
the present disclosure. The corneal preservation and rehydration
device of the embodiment includes a box body and a box lid 1,
wherein the box body and the box lid 1 are detachably connected. A
corneal bracket 2 is provided in the box body for holding a cornea,
wherein a surface of the corneal bracket 2 for placing a cornea is
a convex spherical surface 21, and a blocking portion 22 is
provided at the surrounding of the convex spherical surface 21 for
preventing a cornea from dropping out.
[0020] An embodiment of the present disclosure provides a corneal
preservation and rehydration device. As the corneal bracket 2 is
provided in the box body for holding a cornea, the cornea may be
placed on the corneal bracket 2. As the surface of the corneal
bracket 2 for placing a cornea is the convex spherical surface 21,
and a cornea has a flake-shaped structure in a convex spherical
type, a cornea may fit to the convex spherical surface 21 to
maintain its original structure and shape. As the blocking portion
22 is provided at the surrounding of the convex spherical surface
21 to prevent a cornea from dropping out, the cornea may not slide
off from the convex spherical surface 21. Before a cornea is used,
water may be added into the box body to soak the cornea therein to
rehydrate the cornea. Compared with the prior art, by using the
above corneal preservation and rehydration device to pack a cornea,
the cornea can be positioned effectively, fixed and preserved so as
to avoid being deformed during movement and transportation. Also,
before used, a cornea can be rehydrated inside this device,
reducing the risk of contaminating the cornea through using anther
container for hydration.
[0021] In the above embodiment, the connection way of the box body
and the box lid 1 may be designed to be detachable connection to
facilitate placement and removal of a cornea. And in order to
realize the detachable connection of the box body and the box lid
1, the connecting portion of the box body and the box lid 1 can be
made into a structure as shown in FIG. 1. Specifically, the
external wall of the top part of the box body is provided with an
external thread, and the side internal wall of the box lid 1 is
provided with an internal thread which can match with this external
thread. A threaded connection structure of the box body and the box
lid 1 may make the procedure of removing and fitting the box lid 1
simple and smooth.
[0022] The box body may adopt a structure as shown in FIG. 1.
Referring to FIG. 1, the box body includes a box trunk 3 and a box
bottom 4 located under the bottom part of the box trunk 3. The
corneal bracket 2 is located above the box bottom 4. A receiving
cavity 5 is provided between the box bottom 4 and the corneal
bracket 2. The box lid 1 is configured to cover the box body. A
cornea-holding space is provided between the corneal bracket 2 and
the box lid 1. The receiving cavity 5 and the cornea-holding space
communicate. As a result, when a substance having a specific
function is placed in the receiving cavity 5, a functioning space
of the substance may extend to the cornea-holding space, so that a
cornea placed in the cornea-holding space may be acted on.
[0023] In the above embodiment, in order to dry and preserve a
cornea, desiccant having the function of drying a cornea may be
placed in the receiving cavity 5. Referring to FIG. 1, desiccant 6
is placed in the receiving cavity 5. The desiccant 6 is able to
absorb moisture from the corneal site, thereby achieving drying and
preservation of a cornea.
[0024] Further, in order to fix the desiccant 6 stored in the
receiving cavity 5, the receiving cavity 5 is provided with a
limiting structure 7 for fixing the desiccant 6. The limiting
structure 7 may adopt a structure as shown in FIG. 2. Specifically,
the limiting structure 7 consists of a plurality of fasteners with
lower ends being connected to the bottom of the receiving cavity 5.
The width of a gap between each adjacent two of the plurality of
fasteners is less than a maximum width of the desiccant 6. Each of
the plurality of fasteners includes a vertical protrusion 71 and a
horizontal protrusion 72. The vertical protrusion 71 may be made
into a cuboid structure as shown in FIG. 2, and also may be made
into a cylindrical structure, and that is not limited herein. The
horizontal protrusion 72 is arranged on the top of the vertical
protrusion 71 and towards the central axis of the plurality of
fasteners. Vertical protrusions 71 of the plurality of fasteners
are used to prevent the desiccant 6 from moving horizontally, and
horizontal protrusions 72 of the plurality of fasteners are used to
prevent the desiccant 6 from moving up and down, so the position of
the desiccant 6 is limited. A connection way of the box trunk 3 and
the box bottom 4 may be designed to be detachable connection so as
to facilitate the placement and removal of the desiccant.
[0025] In order to realize the detachable connection of the box
trunk 3 and the box bottom 4, the box bottom 4 preferably adopts a
structure as shown in FIG. 3. Specifically, the box bottom 4
includes a base 41 and a tubular protrusion 42 which is arranged on
the upper surface of the base. A cavity surrounded by the tubular
protrusion 42 is the receiving cavity 5, the external wall of the
tubular protrusion 42 is provided with an external thread. As shown
in FIG. 7, the internal wall of the bottom part of the box trunk 3
is provided with an internal thread that may match with this
external thread. A threaded connection structure of the box trunk 3
and the box bottom 4 may make the procedure of removing and fitting
the box bottom 4 simple and smooth.
[0026] Specifically, the blocking portion 22 may be a structure of
a cylindrical tube with a lower end being connected to the edge of
the convex spherical surface 21, and may also be a structure of a
plurality of protruded poles arranged around the convex spherical
surface 21. Compared with the above first solution, the above
second solution may be used to effectively stop a cornea from
slipping off from the convex spherical surface 21 and also
facilitate placing and taking out a cornea via special tweezers, by
reasonably designing a gap between each adjacent two of the
plurality of protruded poles, and specifically, the width of this
gap is made smaller than the maximum width of a cornea and larger
than the width of the special tweezers for picking up a cornea.
Therefore, it is preferable that the blocking portion 22 is the
structure of a plurality of protruded poles arranged around the
convex spherical surface 21 to effectively stop a cornea from
slipping off from the convex spherical surface 21 and getting folds
or deformation, and also to facilitate placing and taking out a
cornea via special tweezers. And for example, the blocking portion
22 may be made as a structure as shown in FIG. 4. That is, the
blocking portion 22 includes a plurality of protruded poles
arranged around the convex spherical surface 21, there is a certain
gap between each adjacent two of the plurality of protruded poles,
and the width of the gap is 1.about.3 mm. Further, since a cornea
may shake up and down during the movement and transportation, in
addition to providing the blocking portion 22 in the corneal
preservation and rehydration device to prevent a cornea from
slipping off from the convex spherical surface 21, and a distance
between the lower surface of the box lid 1 and the upper surface of
the blocking portion 22 may also be reasonably arranged, to prevent
a cornea from dropping out from a space between the lower surface
of the box lid 1 and the upper surface of the blocking portion 22.
Specifically, the distance between the upper surface of the
blocking portion 22 and the lower surface of the box lid 1 is
arranged to be less than 0.2 mm, to prevent a cornea from dropping
out from the space between the lower surface of the box lid 1 and
the upper surface of the blocking portion 22 due to that a cornea
shakes upward and downward in a too large amplitude during the
movement and transportation. In order to ensure avoiding that a
cornea overturns in a space above the convex spherical surface and
surrounded by the blocking portion so that the obverse and reverse
of the cornea are shifted, the height of each of the plurality of
protruded poles may be arranged to be smaller than the diameter of
a cornea or even lower. In conclusion, a cornea is effectively
prevented from overturning by height arrangement of the above
protruded poles and distance arrangement between the blocking
portion 22 and the box lid 1, thereby avoiding an influence on
clinical use.
[0027] In order to ensure that the distance from the highest point
of the blocking portion 22 to the lower surface of the box lid 1 is
smaller, the blocking portion 22 may be designed to be higher so
that the highest point of the blocking portion 22 is near the lower
surface of the box lid 1, that is, the highest point of blocking
portion 22 is higher than an upper end surface of the box body.
Alternatively, the top external wall of the box lid 1 may be
designed to be lower so that the lower surface of the box lid 1
approaches the highest point of the blocking portion 22, that is,
the highest point of the blocking portion 22 is lower than the
upper end surface of the box body. When the highest point of the
blocking portion 22 is higher than the upper end surface of the box
body, special tweezers may be poked into an area of the convex
spherical surface 21 through one of side gaps of the blocking
portion 22 to facilitate placing or taking out a cornea via special
tweezers. In this case, rehydration operation may be as follows:
pouring water into the box trunk 3, removing a cornea from the
convex spherical surface 21 via special tweezers, putting the
cornea into the water within the box trunk 3 for rehydration,
removing the cornea after a period of time, and then the corneal
rehydration operation being completed. When the highest point of
the blocking portion 22 is lower than the upper end surface of the
box body, in the case that a cornea needs to be preserved by a
preservation solution, the preservation solution in the box trunk
may reach a level of the position that a cornea can be completely
submerged so as to preserve a cornea effectively. In addition,
since the highest point of the blocking portion 22 is lower than
the upper end surface of the box body, specific processes of the
rehydration operation may be simplified as follows: directly
pouring water into the box trunk to make a cornea be soaked in the
water, and removing the cornea after a period of time, and then the
rehydration of the cornea being completed. The operation is simple
and convenient. Preferably, the water used for rehydration is water
adequate for clinical use, preferably water for injection.
[0028] The highest point of the blocking portion 22 is the highest
point of the plurality of protruded poles. Specifically, when the
heights of the plurality of protruded poles are the same, the
highest point of the blocking portion 22 is a top position of any
one of the plurality of protruded poles; when the heights of the
plurality of protruded poles are different, the highest point of
the blocking portion 22 is the top position of the highest one of
the plurality of protruded poles.
[0029] When the top external wall of the box lid 1 is recessed
towards the blocking portion 22, a recessed portion 11 may adopt a
structure as shown in FIG. 6, that is, the shape of the recessed
portion 11 is a regular hexagon. Of course, the shape of the
recessed portion 11 may also be a circle, oval or triangle, etc.
And the position of the recessed portion 11 may be at a central
position of the box lid 1 or also may not be at the central
position of the box lid 1, and that is not limited herein.
[0030] Specifically, the corneal bracket 2 may adopt a structure as
shown in FIG. 7. The corneal bracket 2 includes a supporting plate
23 and a boss 24 arranged on the supporting plate. The boss 24
protrudes in a direction approaching the box lid 1. The upper
surface of the boss 24 is the convex spherical surface 21 for
placing a cornea. The supporting plate 23 is used to support the
boss 24 arranged thereon. The edge of the supporting plate 23 is
connected to the internal wall of the box trunk 3. The supporting
plate 23 is provided with through holes 25 penetrating both upper
and lower surfaces of the supporting plate 23. The through holes 25
connect two cavities of the upper and the lower separated by the
supporting plate 23, wherein a cavity below the supporting plate 23
is the receiving cavity 5, and a cavity above the supporting plate
23 is the cornea-holding space for placing a cornea.
[0031] Connection of the supporting plate 23 and the box trunk 3
may be made as detachable connection, and it is also possible to
make the supporting plate 23 and the box trunk 3 as an integrated
molded structure. When the first solution is adopted, the
supporting plate 23 and the box trunk 3 are two different
components, which need to be separately manufactured, so a
manufacturing process is complicated. Therefore, in order to avoid
the above-mentioned problems, it is preferable that the supporting
plate 23 and the box trunk 3 are made as the integrated molded
structure, and for example, may be made as a structure shown in
FIG. 7, thereby simplifying the manufacturing process.
[0032] In addition, the boss 24 may be in a cylindrical type or a
cuboid type. Of course, the boss 24 may also be in other shapes.
And that is not limited herein.
[0033] Further, since the supporting plate 23 is used to support
the boss 24 provided thereon, the supporting plate 23 subjects to
pressure from the boss 24. In order to prevent the supporting plate
23 from being deformed due to the pressure, the structure of the
supporting plate 23 needs to be reasonably designed. The supporting
plate 23 may adopt a conical plate structure, and may also adopt a
flat plate structure. The conical plate structure is less
susceptible to deformation than the plate structure when the
supporting plate 23 subjects to a constant pressure from the boss,
therefore, the supporting plate 23 is preferably made as the
conical plate structure, and for example, made as the conical plate
structure as shown in FIG. 7.
[0034] In order to enable the desiccant stored in the receiving
cavity 5 to uniformly and effectively dry a cornea, the through
holes 25 are preferably uniformly arranged on the conical plate,
and the shape of each of the through holes 25 may be rectangular,
circular, polygonal, etc., which is not limited herein.
[0035] In order to preserve a cornea at a constant temperature, a
thermal insulation structure may be provided in the corneal
preservation and rehydration device. In the embodiment shown in
FIG. 1, the side wall of the box body may be made in a structure of
two layers. There is a gap between an internal layer and an
external layer of the side wall of the box body, and this gap is
filled with air. Since air is poor conductor of heat, heat exchange
between the inside and the outside of the corneal preservation and
rehydration device may be hindered, thereby achieving preserving a
cornea at a constant temperature.
[0036] Referring to FIG. 1, the box body has a side wall with a
structure of two layers, and the gap between the two layers of the
side wall is filled with air. In order to increase the strength of
the side wall of the box body, a stiffening rib may be arranged in
this gap of the structure of two layers to prevent the box body
from being deformed due to squeezing from the outside world.
[0037] In order to ensure good leakproofness of the corneal
preservation and rehydration device, a first sealing ring 8 may be
arranged at a connecting position of the box trunk 3 and the box
lid 1, and a second sealing ring 9 is arranged at a connecting
position of the box bottom 4 and the box trunk 3. Specifically,
along one perimeter of the external wall of the box trunk 3, a
groove for placing the first seal ring 8 may be arranged with a
depth smaller than the diameter of the first sealing ring 8, and
then, the first seal ring 8 is arranged therein. Along one
perimeter of the external wall of the tubular protrusion 42, a
groove for placing the second seal ring 9 may be arranged with a
depth smaller than the diameter of the second sealing ring 9, and
then, the second sealing ring 9 is arranged therein. Therefore,
after the box trunk 3 and the box lid 1 are connected, a portion of
the first sealing ring 8 located outside the corresponding groove
may be pressed by the side internal wall of the box lid 1 to
achieve a sealed connection of the box trunk 3 and the box lid 1.
Similarly, after the box bottom 4 and the box trunk 3 are
connected, a portion of the second sealing ring 9 located outside
the corresponding groove may be pressed by the internal side wall
of the box trunk 3 to achieve a sealed connection of the box bottom
4 and the box trunk 3. As a result, overall leakproofness of the
corneal preservation and rehydration device may be ensured, thereby
preventing external air and impurities from entering the corneal
preservation and rehydration device and affecting a cornea. In
addition, when there is preservation solution stored inside the
corneal preservation and rehydration device, the preservation
solution may be prevented from flowing out.
[0038] In order to maintain the structure and shape of a cornea
more effectively, it is preferable that the curvature of the convex
spherical surface 21 is similar to the curvature of a cornea, so
that a cornea may completely fit to the convex spherical surface
21, thereby effectively preventing deformation of a cornea.
[0039] Because the connection of the box trunk 3 and the box lid 1
as well as that of the box trunk 3 and the box bottom 4 are both
threaded connections, the components need to be rotated during
disassembly and installation. In order to prevent a slip phenomenon
during a rotating process, referring to FIG. 8, it is preferable to
provide first anti-slip protrusions 12 and second anti-slip
protrusions 43 on the side external wall of the box lid 1 and the
external wall of the box bottom 4, respectively, so as to
facilitate disassembly and installation of the box trunk 3 and the
box lid 1, as well as those of the box trunk 3 and the box bottom
4.
[0040] The foregoing descriptions merely show specific
implementations of the present disclosure, and the protection scope
of the present disclosure is not limited thereto. Any skilled in
the art can readily conceive of variations or replacements within
the technical scope disclosed by the present disclosure, and these
variations or replacements shall fall into the protection scope of
the present disclosure. Therefore, the protection scope of the
present disclosure should be subject to the protection scope of the
claims.
* * * * *